-84.95% is the change from 206 to 31
Calculation steps:
[( 31 - 206 ) ÷ 206] x 100 = -84.95%
Formula
Percentage change = [(31 - 206) / 206] x 100
Subtract the new number by the original number
31 - 206 = -175
-175 ÷ 206 = -0.8495145631067961
-0.8495145631067961 x 100 = -84.95%